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PostgreSQL Crosstab Query
...you might have attributes of different kind and output text, date, numeric etc. for respective attributes. There is a code example at the end of the chapter crosstab(text, text) in the manual.
db<>fiddle here
Advanced examples
Pivot on Multiple Columns using Tablefunc - also demonstrating...
Split a string by another string in C#
...to use Regex.Escape, because my split string will often contain asterisks, etc. #2: While this program I'm writing needs no real optimization, there does appear to be additional overhead involved with using the Regex Split method.
– Brandon
Feb 11 '10 at 15:4...
What is the best way to repeatedly execute a function every x seconds?
...executed, then it waits 60 seconds then it executes again, waits, execute, etc...
No need to complicate things :D
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JavaScript: filter() for Objects
...ect, just like there already are Object.keys, Object.assign, Object.is, ...etc.
I provide here several solutions:
Using reduce and Object.keys
As (1), in combination with Object.assign
Using map and spread syntax instead of reduce
Using Object.entries and Object.fromEntries
1. Using reduce and ...
How do I pass multiple parameters into a function in PowerShell?
...e, it's right in line with other system default shells like cmd, sh, bash, etc.
– Bender the Greatest
Jun 6 '19 at 21:52
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How to make a SPA SEO crawlable?
... but when I submit my site to google, and give links to google, site maps, etc do I need to give google mysite.com/#! or just mysite.com and google will add in the escaped_fragment because I have it in the meta tag?
– ccorrin
Sep 7 '13 at 8:40
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How to set a value of a variable inside a template code?
...ontain a templatetags directory, at the same level as models.py, views.py, etc. If this doesn’t already exist, create it - don’t forget the __init__.py file to ensure the directory is treated as a Python package.
Create a file named define_action.py inside of the templatetags directory with the...
C++ equivalent of java's instanceof
...it or its equivalent appear in every major OO-language: C++, Java, Python, etc.?)
– Paul Draper
Feb 3 '13 at 22:01
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How much is the overhead of smart pointers compared to normal pointers in C++?
...plementation details and CPU architecture for write barriers, atomic locks etc. once listening you will never talk about this feature being cheap. If you just want a proof of the magnitude slower, skip the first 48 minutes and watch him running example code which runs upto 180 times slower (compiled...
How do I move a redis database from one server to another?
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On Ubuntu, the Redis conf file is stored in /etc/redis/redis.conf, and you can search through it to find where your .rdb files are: cat /etc/redis/redis.conf | grep "rdb". In my case it's /var/lib/redis
– Herman Schaaf
Apr 29 '13 a...